公开(公告)号：JP2002049170A

公开(公告)日：2002-02-15

申请号：JP2001149282

申请日：2001-05-18

Applicant: CANON KK

Inventor： KAWAMURA KUNIMASA ,  YAMAZAKI KOJI ,  EBARA TOSHIYUKI ,  KAWADA MASAYA ,  KARAKI TETSUYA ,  OWAKI HIRONORI

IPC: G03G15/02 ,  G03G5/08 ,  G03G9/08 ,  G03G15/04 ,  G03G15/08 ,  G03G21/10

Abstract: PROBLEM TO BE SOLVED: To provide a Si photoreceptor and a device for image formation which prevent deposition of toner during cleaning and which realize good image formation. SOLUTION: The average inclination Δa of the photoreceptor surface in 10 μm×10 μm area is controlled to 0.12 to 1.0, more preferably 0.15 to 0.8. More preferably, a photoconductive layer 102 containing amorphous Si is formed on a conductive substrate 101 having

公开(公告)号：JP2002040697A

公开(公告)日：2002-02-06

申请号：JP2001144897

申请日：2001-05-15

Applicant: CANON KK

Inventor： KAWADA MASAYA ,  EBARA TOSHIYUKI ,  OWAKI HIRONORI ,  KARAKI TETSUYA ,  KAWAMURA KUNIMASA

IPC: G03G21/00 ,  G03G5/08 ,  G03G15/04

Abstract: PROBLEM TO BE SOLVED: To provide a Si photoreceptor onto which toner is prevented from sticking, when cleaned and with which a satisfactory image can be formed, and to provide an image-forming device. SOLUTION: This Si photoreceptor is obtained by depositing a photoconductive layer 102 containing a-Si on an electrically conductive substrate 101 having a surface roughness Ra of smaller than 9 nm, preferably smaller than 6 nm, in 10 μm×10 μm surface area. The layer 102 has such unevenness of the surface roughness in 10 μm× 10 μm surface area that the difference of the heights of uneven points corresponding to the cumulative frequency of the uneven points in height of 90% or 50% is made to be 3 to 35 nm, preferably 5 to 30 nm by taking the deepest point as the reference.

公开(公告)号：JP2002031905A

公开(公告)日：2002-01-31

申请号：JP2001115558

申请日：2001-04-13

Applicant: CANON KK

Inventor： OWAKI HIRONORI ,  EBARA TOSHIYUKI ,  FURUSHIMA SATOSHI ,  AOKI MAKOTO ,  NIINO HIROAKI ,  TSUCHIDA NOBUFUMI ,  KAWAMURA KUNIMASA

IPC: G03G21/00 ,  G03G5/08

Abstract: PROBLEM TO BE SOLVED: To provide a light receiving member which ensures maximum characteristics in the wide wavelength range of various light sources used in a copying process, reproduces a high definition and high grade image free of ghost phenomenon and can enhance production efficiency and to provide a method for evaluating the member and an electrophotographic device. SOLUTION: The light receiving member has an electrically conductive substrate and a photoconductive layer comprising an amorphous material based on silicon atoms and containing hydrogen atoms and/or halogen atoms. The light receiving member is irradiated with two sorts of de-electrifying lights having the same quantity of energy per unit area and separately having 565 nm and 660 nm wavelength at 300 mm/sec relative movement speed of the surface of the member while keeping the surface temperature of the member at room temperature, correlation between electric current which flows through an electrifying member used for electrification and the surface potential of the light receiving member in the irradiation is estimated with respect to each of the two sorts of discharging lights, the difference in the surface potential between the two sorts of discharging lights is calculated and the maximum value of the difference is adjusted to

公开(公告)号：JP2001281896A

公开(公告)日：2001-10-10

申请号：JP2000095010

申请日：2000-03-30

Applicant: CANON KK

Inventor： EBARA TOSHIYUKI ,  KAWADA MASAYA ,  OWAKI HIRONORI ,  KAWAMURA KUNIMASA ,  KARAKI TETSUYA ,  YAMAZAKI KOJI

IPC: G03G5/08 ,  B82B1/00 ,  G03G5/05 ,  G03G5/082 ,  G03G5/147

Abstract: PROBLEM TO BE SOLVED: To provide an a-Si photoreceptor and an image forming device in which melt sticking of a digital copying machine is prevented and formation of good images is realized, in particular, to provide the layer structure of a photoreceptor which does not influence on images even when irregular shaping on the a-Si drum surface layer is caused. SOLUTION: The photoreceptor is produced by successively laminating a photoconductive layer containing amorphous Si and a surface protective layer consisting of an amorphous material on a conductive substrate. The spectral reflectivity (%) satisfies the relation of 0 =1.3 and 22

公开(公告)号：JP2001142371A

公开(公告)日：2001-05-25

申请号：JP32714599

申请日：1999-11-17

Applicant: CANON KK

Inventor： KARAKI TETSUYA ,  KAWADA MASAYA ,  OWAKI HIRONORI ,  KAWAMURA KUNIMASA ,  EBARA TOSHIYUKI ,  YAMAZAKI KOJI

IPC: G03G21/10 ,  G03G5/08

Abstract: PROBLEM TO BE SOLVED: To provide an electrophotographic device capable of stably and excellently forming an image by excellently cleaning the surface of a photoreceptor drum for a long period even in the case of using toner having additive and using the photoreceptor drum whose dynamic hardness is large without shortening the lives of the photoreceptor drum and a cleaning blade. SOLUTION: As for this electrophotographic device, the edge of a part where the cleaning blade consisting of a belt-like elastic body for removing residue on the surface of the photoreceptor abuts on the photoreceptor is made rough. The device is adjusted so that Ry is within >=2.0 μm and =5.0 μm and